E550 loud whine on acceleration
#1
Junior Member
Thread Starter
Join Date: Jan 2011
Location: Austin, TX
Posts: 72
Received 0 Likes
on
0 Posts
2016 E400, 2015 GLK 350
E550 loud whine on acceleration
2007 E550. Recently had transmission service at 60k mikes. Since then, the car has had a loud, high-pitched whine on hard acceleration. It's loudest at high RPMs. Thoughts?